Specifications

S1C6S2N7 TECHNICAL SOFTWARE EPSON II-39

CHAPTER 3: PERIPHERAL CIRCUITS (Stopwatch Timer)

The S1C6S2N7 contains 1/100 sec and 1/10 sec stopwatch

timers.

This timer can be loaded in 4-bit units. Starting, stopping,

and resetting the timer can be controlled by register.

Figure 3.7.1 shows the operation of the stopwatch timer.

Control of the stop-

watch timer

Fig. 3.7.1

Stopwatch timer

operating timing

Address

bits

Stopwatch timer (SWL) timing chart

Stopwatch timer (SWH) timing chart

Occurrence of

10 Hz interrupt request

Occurrence of

1 Hz interrupt request

0E3H

(1/10 sec BCD)

0E2H

(1/100 sec BCD)